Gage-cock.



PATENTBD OGT. 20,1903.

A. W. UADMAN.

GAGE COCK.

APPLIOATfON FILED JULY 19. 1902.

N0 MODEL.

,4. I44 Caalrzzaru.

witnesses UNITED STATES Patented October 20, 1903.

PATENT OFF-ICE.

GAGE-COCK.

SPECIFICATION forming part of Letters ljatent No. 742,002, dated October20, 1903.

Application filed July 19. 1902.

The primary object of this invention is to .provide improved meansexternally located for positively cutting 01f communication between aboiler and a-gage-cock when it is necessary to gain access to the valveor valvechamber.

A further object is to so construct the valve and the seat thereof thatwhen either becomes worn a practically new valve or valve-seat may besecured by a mere reversal or rearrangement of either or both of theseparts.

The invention will be hereinafterfully set forth, and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a view in side elevation witha portion of the cock-casing broken away. Fig. 2 is a view of the valveand its stem removed. Fig. 3 is a tranverse sectional view of thevalve-seat.

Referring to the drawings, 1 designates the casing of a gage-cock 2, theinlet-port in that end of the casing which is" screwed into the boiler,such port at its inner or discharge end opening into the valve-chamber 3through a wall 3, extended at an angle to such chamber. The inner end ofthe inlet-port opens centrally through the wall 3, and hence at an angleto the valve-chamber, so that it may be closed by a valve 4, whose stem5 is extended through and is shown as working in a plug 5, screwed intoan internally-threaded boss, also set at an angle, so as to besubstantially concentric with the discharge end of the inlet-port, suchboss facing the wall 3'. The valve 4 is formed with two faces, onedesigned to seat against the inlet-port when the valve is closed and theother against the valve-seat in the plug 5 when the valve is opened. Asteam and water tight joint is thus created, obviating the necessity fora Serial No. 116,1 92. (No model.)

packing-nut for stem 5. By turning the head 6 of, this valve passagethrough the inlet-port to the valve-chamber may be entirely out off oropened at will. Hence by locating this positively-operated cut-off valveintermediate the boiler and the gage-valve all escape may be readily cutoff when it is desired to gain access to the valve-chamber, and byhaving the port at an angle to the chamber the valve4c will fit snuglythereover, entirely closing the opening and avoidingall danger ofleakage. This cut-01f valve being positively operated and its stemexteriorly positioned, the danger of injury to the operator by anyescape through the gage-cock while repairing the latter is entirelyavoided.

7 is the gage-valve; 8, the stem thereof; 9, the flutter disk or wheel,and 10 the valveseat. The valve is shown as being spheroidal, with acenter opening for the stem,which 1atter is shown as exteriorly threadedto engage an internal thread of the valve. It is obvi ous, however, thatthe valve may be secured in any preferred way and may be of any desiredshape; but I have found that by rounding its contact-surfaces bettercontact is had with its seat and also that by securing it in place by ascrewthread the tendency is to cause it to tighten under the rotation ofthe stem consequent upon the action of the boilerpressure against theflutter-wheel. When one side or face of the valve becomes worn, thevalve may be removed from its stem, reversed, and immediately replaced.

The seat 10 is in'the form of a sleeve, having a centralexteriorly-located peripheral flange 12, which is designed to beardirectly against an inwardly-extended shoulder 13, formed in theremovable end section 15 of the gage-casing. Each end of the openingthrough the seat-sleeve is reamed or concaved at 16 to accommodate andinsure the firm seating of valve 7. If the seat becomes worn at one end,it is only necessary to remove the section 15 and reverse the seat endfor end, that portion previouslyengaged by the valve being then extendedin the opposite direction. The valve-stem is, as ordinarily, extendedthrough an opening in the end of the casing-section and fitted with acap 17, against which pressure is applied to unseat valve-7, any outflowpassing 0d through the ordinary outlet 18.

The advantages of my invention are apparcut to those skilled in the art.

It Will be seen that I have provided extremely simple and inexpensivemeans for prolonging the term of utility of a gage-cock and that accessmay be readily had to the interior of the cock, without Waiting untilthe boiler is thrown out of use, by the mere adjustment of apositively-operated valve located intermediately of the boiler and thegage -Valve and operated from the exterior of the casing.

I claim as my invention 1. A gage-cock having, in combination, a casing,a removable section thereof having an inner shoulder, a valve-seathaving a peripheral flange designed to be held by such shoulder againstthe outer end of the casing, such seat being reversible end for end, theexteriorly-threaded valve-stem, a flutter-Wheel on such stern, and avalve capable of being reversed end for end, such valve having doublefaces, one only of which is used at a time, and also having a centralthreadedopening for engaging the thread of the valve-stem, as set forth.

2. As an article of manufacture, a gagecock comprising a casing havingat one end an anguIarly-arranged inlet, a boss concentric with suchinlet, a plug in such boss, a valve working in said plug for controllingsaid inlet, a removable section secured to the outer end of the casing,and having an inner flange, a valve-seat sleeve having a peripheralflange and correspondingly reamed at its two ends, said sleeve beingreversible end for end and said flange being held by the flange of theremovable section against the end of the casing,the eXteriorly-threadedvalve-stem extended through said sleeve, a flutter-wheel on said stem,and the valve reversible on said stem, said valve having ascrew-threaded opening engaging the thread of the valvestem, as setforth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

ALEXANDER W. CADMAN.

WVitnesses:

FRED H. STIMPEL, A. G. SHARRA.

